Chie-Min Christopher Koo

CIK 1711528 · View on SEC EDGAR ↗

Insider

First SEC filing: July 25, 2017 · Latest: July 25, 2017

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 3 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

3 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Aug. 10, 2020 RBB S 300 $13.70 $4,110 17,802 Direct -1.66% Disposed 99.1% (price as of 2026-08-19)
Aug. 10, 2020 RBB S 300 $13.40 $4,020 18,102 Direct -1.63% Disposed 103.5% (price as of 2026-08-19)
Aug. 7, 2020 RBB S 300 $13.34 $4,002 18,402 Direct -1.60% Disposed 104.4% (price as of 2026-08-19)
Aug. 7, 2020 RBB S 300 $13.30 $3,990 18,702 Direct -1.58% Disposed 105.0% (price as of 2026-08-19)
Aug. 7, 2020 RBB S 300 $13.30 $3,990 19,002 Direct -1.55% Disposed 105.0% (price as of 2026-08-19)
Aug. 7, 2020 RBB S 200 $13.00 $2,600 19,302 Direct -1.03% Disposed 109.8% (price as of 2026-08-19)
Aug. 6, 2020 RBB S 300 $12.82 $3,846 19,502 Direct -1.51% Disposed 112.7% (price as of 2026-08-19)
Aug. 6, 2020 RBB S 300 $12.82 $3,846 19,502 Direct -1.51% Disposed 112.7% (price as of 2026-08-19)
Aug. 5, 2020 RBB S 200 $12.86 $2,572 19,802 Direct -1.00% Disposed 112.1% (price as of 2026-08-19)
Aug. 5, 2020 RBB S 100 $12.85 $1,285 20,002 Direct -0.50% Disposed 112.2% (price as of 2026-08-19)
Nov. 27, 2019 RBB S 100 $20.34 $2,034 20,102 Direct -0.50% Disposed 34.1% (price as of 2026-08-19)
Nov. 27, 2019 RBB S 200 $20.33 $4,066 20,202 Direct -0.98% Disposed 34.1% (price as of 2026-08-19)
Nov. 27, 2019 RBB S 100 $20.33 $2,033 20,402 Direct -0.49% Disposed 34.1% (price as of 2026-08-19)
Nov. 27, 2019 RBB S 100 $20.33 $2,033 20,502 Direct -0.49% Disposed 34.1% (price as of 2026-08-19)
Nov. 11, 2019 RBB S 99 $20.58 $2,037 20,602 Direct -0.48% Disposed 32.5% (price as of 2026-08-19)
Nov. 8, 2019 RBB S 401 $20.85 $8,361 20,701 Direct -1.90% Disposed 30.8% (price as of 2026-08-19)
Nov. 8, 2019 RBB S 500 $20.78 $10,390 21,102 Direct -2.31% Disposed 31.2% (price as of 2026-08-19)
Feb. 19, 2019 RBB S 200 $21.00 $4,200 21,602 Direct -0.92% Disposed 29.9% (price as of 2026-08-19)
Feb. 15, 2019 RBB S 200 $20.50 $4,100 21,802 Direct -0.91% Disposed 33.0% (price as of 2026-08-19)
Feb. 14, 2019 RBB S 200 $20.00 $4,000 22,002 Direct -0.90% Disposed 36.4% (price as of 2026-08-19)
Feb. 11, 2019 RBB S 200 $19.60 $3,920 22,202 Direct -0.89% Disposed 39.1% (price as of 2026-08-19)
Feb. 4, 2019 RBB S 200 $19.30 $3,860 22,402 Direct -0.88% Disposed 41.3% (price as of 2026-08-19)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
April 27, 2018 RBB Option (right to buy) Common Stock (10,763) $9.29 Jan. 2, 2019 10,763 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 8 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
July 25, 2017 RBB Common Stock, No Par Value 11,839 Direct
July 25, 2017 RBB Option (right to buy)→ Common Stock (10,763) 10,763 Direct
July 25, 2017 RBB Option (right to buy)→ Common Stock (10,763) 10,763 Direct
July 25, 2017 RBB Option (right to buy)→ Common Stock (10,763) 10,763 Direct
July 25, 2017 RBB Option (right to buy)→ Common Stock (10,763) 10,763 Direct
July 25, 2017 RBB Option (right to buy)→ Common Stock (10,250) 10,250 Direct
July 25, 2017 RBB Option (right to buy)→ Common Stock (10,000) 10,000 Direct
July 25, 2017 RBB Option (right to buy)→ Common Stock (10,000) 10,000 Direct